.perceptle{--p-paper:#f7f6f2;--p-surface:#fff;--p-ink:#242c2c;--p-muted:#646d6b;--p-border:#dedfd8;--p-blue:#2867b2;--p-orange:#c85c35;--p-count:#f0e6d7;--p-track:#dfeadf;--p-angle:#e0e9f5;--p-tempo:#eee3ef;--p-split:#f7e6d9;--grade-good:#2f8a57;--grade-bad:#b94a48;color:var(--p-ink);background:var(--p-paper);-webkit-font-smoothing:antialiased;min-height:100svh;font-family:Arial,PingFang SC,Microsoft YaHei,sans-serif;line-height:1.6}.dark .perceptle{--p-paper:#1b2425;--p-surface:#232e2f;--p-ink:#eeeae0;--p-muted:#abb6b1;--p-border:#3d4948;--p-blue:#89b4ef;--p-orange:#efa37e;--p-count:#453d31;--p-track:#2b4238;--p-angle:#2d3d50;--p-tempo:#44354a;--p-split:#4a362b;--grade-good:#6fd39a;--grade-bad:#f08a86}.perceptle *,.perceptle :before,.perceptle :after{box-sizing:border-box}.perceptle .wrap{max-width:1160px;margin-inline:auto;padding-inline:36px}.perceptle a{color:inherit;text-decoration:none}.perceptle button{cursor:pointer;font:inherit}.perceptle button:disabled{cursor:not-allowed;opacity:.45}.perceptle :focus-visible{outline:3px solid var(--p-blue);outline-offset:5px}.perceptle h1,.perceptle h2,.perceptle h3,.perceptle p{margin:0}.perceptle h2{letter-spacing:-1.1px;font-size:clamp(26px,3vw,38px);font-weight:600;line-height:1.22}.perceptle h3{font-size:20px;font-weight:600}.perceptle .muted{color:var(--p-muted);font-size:13px}.perceptle .eyebrow{letter-spacing:1.7px;text-transform:uppercase;font-size:11px;font-weight:700}.perceptle .skip-link{z-index:100;background:var(--p-surface);padding:12px;position:fixed;top:-100px;left:16px}.perceptle .skip-link:focus{top:12px}.perceptle .site-header{border-bottom:1px solid var(--p-border);justify-content:space-between;align-items:center;height:100px;display:flex}.perceptle .brand{letter-spacing:-1.2px;align-items:center;font-size:26px;font-weight:700;display:flex}.perceptle .brand-dot{color:var(--p-orange)}.perceptle .brand-mark{border:2px solid var(--p-ink);border-radius:50%;width:31px;height:31px;margin-right:10px;font-family:Georgia,serif;font-size:28px;line-height:23px;position:relative}.perceptle .brand-mark span{color:var(--p-orange);font-size:20px;position:absolute;top:1px;right:2px}.perceptle .site-header nav{align-items:center;gap:28px;font-size:13px;display:flex}.perceptle .nav-button,.perceptle .theme-button{background:0 0;border:0;padding:6px 0}.perceptle .theme-button{padding:8px}.perceptle .sun-icon{display:none}.dark .perceptle .sun-icon{display:block}.dark .perceptle .moon-icon{display:none}.perceptle h1{letter-spacing:-2.8px;margin-block:24px;font-size:clamp(42px,4.8vw,63px);font-weight:500;line-height:1.08}.perceptle .tint-count{background:var(--p-count);color:var(--p-ink)}.perceptle .tint-track{background:var(--p-track);color:var(--p-ink)}.perceptle .tint-angle{background:var(--p-angle);color:var(--p-blue)}.perceptle .tint-tempo{background:var(--p-tempo);color:var(--p-ink)}.perceptle .tint-split{background:var(--p-split);color:var(--p-orange)}.perceptle .game-glyph{width:100%;height:100%}.perceptle #how-to-play,.perceptle #scoring,.perceptle #faq{scroll-margin-top:24px}.perceptle .primary-button,.perceptle .secondary-button{border:1px solid var(--p-ink);background:var(--p-ink);color:var(--p-surface);border-radius:8px;justify-content:center;align-items:center;gap:30px;min-height:48px;padding:16px 24px;font-size:14px;font-weight:600;transition:transform .15s,opacity .15s;display:inline-flex}.perceptle .primary-button:hover:not(:disabled){opacity:.9;transform:translateY(-2px)}.perceptle .primary-button>span{font-size:20px;line-height:1}.perceptle .secondary-button{border-color:var(--p-border);color:var(--p-ink);background:0 0;gap:8px;padding:10px 18px}.perceptle .home-content section{border-bottom:1px solid var(--p-border);padding-block:76px}.perceptle .section-heading{max-width:620px}.perceptle .section-heading .eyebrow{color:var(--p-orange);margin-bottom:18px}.perceptle .section-heading>p:last-child{color:var(--p-muted);margin-top:16px;font-size:15px}.perceptle .how-icon{border-radius:13px;width:54px;height:54px;margin-bottom:20px;padding:7px}.perceptle .formula-details{margin-top:20px;font-size:12px}.perceptle summary{cursor:pointer}.perceptle .faq-section{grid-template-columns:.8fr 1.2fr;gap:70px;display:grid}.perceptle .faq-section details{border-bottom:1px solid var(--p-border);padding-block:20px;font-size:14px}.perceptle .faq-section details:first-child{padding-top:0}.perceptle .faq-section details:last-child{border:0}.perceptle .faq-section summary{justify-content:space-between;gap:20px;font-weight:600;list-style:none;display:flex}.perceptle summary::-webkit-details-marker{display:none}.perceptle .faq-section details p{color:var(--p-muted);padding-top:16px}.perceptle .about-section{grid-template-columns:.8fr 1.2fr;gap:70px;display:grid}.perceptle .about-body p{color:var(--p-muted);font-size:15px;line-height:1.85}.perceptle .about-body p+p{margin-top:16px}.perceptle .fact-chips{flex-wrap:wrap;gap:10px;margin:24px 0 0;padding:0;list-style:none;display:flex}.perceptle .fact-chips li{border:1px solid var(--p-border);background:var(--p-surface);border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600}.perceptle .step-list{grid-template-columns:repeat(4,1fr);gap:24px;margin:38px 0 0;padding:0;list-style:none;display:grid}.perceptle .step-list li{border:1px solid var(--p-border);background:var(--p-surface);border-radius:14px;padding:22px}.perceptle .step-number{background:var(--p-ink);width:30px;height:30px;color:var(--p-surface);border-radius:50%;place-items:center;margin-bottom:14px;font-size:13px;font-weight:700;display:inline-grid}.perceptle .step-list h3,.perceptle .feature-card h3{font-size:17px}.perceptle .step-list p,.perceptle .feature-card p{color:var(--p-muted);margin-top:8px;font-size:14px}.perceptle .test-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:22px;margin-top:38px;display:grid}.perceptle .test-card{border:1px solid var(--p-border);background:var(--p-surface);border-radius:14px;flex-direction:column;gap:12px;padding:24px;display:flex}.perceptle .test-card-head{align-items:center;gap:14px;display:flex}.perceptle .test-card .how-icon{flex:none;width:48px;height:48px;margin:0;display:block}.perceptle .test-skill{color:var(--p-orange);letter-spacing:1px;text-transform:uppercase;font-size:12px;font-weight:700}.perceptle .test-card p{color:var(--p-muted);font-size:14px;line-height:1.75}.perceptle .test-card .test-tip{border-top:1px dashed var(--p-border);color:var(--p-ink);margin-top:auto;padding-top:12px}.perceptle .scoring-body{grid-template-columns:1fr 1fr;gap:50px;margin-top:34px;display:grid}.perceptle .scoring-body>div>p{color:var(--p-muted);font-size:14px}.perceptle .scoring-body h3{margin-bottom:12px;font-size:17px}.perceptle 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.grade-D{--grade-color:var(--p-orange)}.perceptle .grade-F{--grade-color:var(--grade-bad)}.perceptle .reveal-info{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.perceptle .reveal-info strong{font-size:15px;font-weight:600}.perceptle .reveal-legend{color:var(--p-muted);align-items:center;gap:6px;font-size:12px;display:flex}.perceptle .reveal-legend i{border-radius:50%;width:9px;height:9px}.perceptle .reveal-legend i+*{margin-right:8px}.perceptle .legend-answer{background:var(--p-blue)}.perceptle .legend-truth{background:var(--p-orange);margin-left:8px}.perceptle .reveal-next{border:1px solid var(--p-ink);background:var(--p-ink);color:var(--p-surface);white-space:nowrap;border-radius:8px;padding:9px 18px;font-weight:600}.perceptle .reveal-timer{background:var(--p-blue);transform-origin:0;width:100%;height:3px;animation:linear forwards perceptle-timer;position:absolute;bottom:0;left:0}@keyframes perceptle-timer{0%{transform:scaleX(0)}to{transform:scaleX(1)}}.perceptle 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var(--p-border);align-items:flex-end;gap:4px;height:110px;padding-top:22px;display:flex}.perceptle .distribution-bars span{background:var(--p-border);border-radius:3px 3px 0 0;flex:1;position:relative}.perceptle .distribution-bars .current{background:var(--p-blue)}.perceptle .distribution-bars b{color:var(--p-blue);white-space:nowrap;margin-bottom:4px;font-size:11px;position:absolute;bottom:100%;left:50%;transform:translate(-50%)}.perceptle .distribution-axis{color:var(--p-muted);justify-content:space-between;margin-top:4px;font-size:10px;display:flex}.perceptle .distribution figcaption{color:var(--p-muted);text-align:center;margin-top:4px;font-size:11px}.perceptle .cover-challenge{border:1px solid var(--p-blue);border-radius:10px;max-width:440px;padding:10px 16px;font-size:15px}.perceptle .results-versus{font-size:14px;font-weight:600}.perceptle .share-menu{align-items:center;gap:10px;display:flex;position:relative}.perceptle .share-popover{z-index:5;border:1px solid var(--p-border);background:var(--p-surface);border-radius:10px;flex-direction:column;min-width:180px;padding:6px;display:flex;position:absolute;bottom:calc(100% + 6px);left:0;box-shadow:0 8px 24px #1a302020}.perceptle .share-popover a,.perceptle .share-popover button{color:var(--p-ink);text-align:left;background:0 0;border:none;border-radius:6px;padding:8px 10px;font-size:14px}.perceptle .share-popover a:hover,.perceptle .share-popover button:hover{background:var(--p-paper)}.perceptle .share-status{color:var(--p-muted);font-size:12px}.perceptle .share-menu textarea{width:260px;font:inherit;font-size:12px;position:absolute;bottom:calc(100% + 6px);left:0}.perceptle .results-rows{flex-direction:column;gap:8px;display:flex}.perceptle .results-actions{z-index:2;border-top:1px solid var(--p-border);background:var(--p-surface);flex:none;justify-content:center;align-items:center;gap:10px;width:calc(100% + 56px);margin:auto -28px 0;padding:12px 28px 16px;display:flex;position:sticky;bottom:0}.perceptle .results-actions>.primary-button,.perceptle .results-actions>.share-menu{flex:50%;max-width:220px}.perceptle .results-actions .primary-button,.perceptle .results-actions .share-menu>.secondary-button{gap:8px;width:100%;min-width:0;min-height:46px;padding:12px 16px;font-size:14px}.perceptle .results-actions .share-status{white-space:nowrap;position:absolute;bottom:calc(100% + 6px);right:0}.perceptle .results-row{border-bottom:1px solid var(--p-border);grid-template-columns:28px 60px 1fr 32px 20px;align-items:center;gap:8px;padding-bottom:7px;font-size:13px;display:grid}.perceptle .results-glyph{border-radius:8px;width:28px;height:28px;padding:5px;display:block}.perceptle .results-human{color:var(--p-muted);font-size:12px}.perceptle .results-human small{color:var(--p-blue);font-size:11px;display:block}.perceptle .results-points{text-align:right;font-weight:700}.perceptle .results-grade{color:var(--p-orange);font-weight:700}.perceptle 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